“…Sesame’s system, which assigns a rating between 350 and 950, is murky and complicated. The company says even innocuous activities, like late-night web browsing or buying video games, could see one’s rank downgraded for “irresponsible” behavior. One undergraduate saw her score plummet to 350 after being named in an unresolved civil suit: Sesame had automatically listed her as a laolai, a deadbeat, “subject to enforcement for breaking trust.”